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ICSE Class 10 Chemistry 2014 Paper

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SECTION - I
State your observation in each of the following cases :
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Question : 34 of 88
Marks: +1, -0
When dilute hydrochloric acid is added to sodium carbonate crystals.
Solution:  
Brisk effervescence with the release of a colourless odourless gas that extinguish a glowing splint and turns lime water milky i.e., CO2\mathrm{CO}_2 gas is released.
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